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var sliders = document.querySelectorAll('.bx-quote-block-right__content .tns-slide-active');
    var existingClass = 'bx-quote-block__inner'; 
    var newClass = 'bx-quote-block__inner_2'; 

sliders.forEach(function(element) {
        // Check if there is an image in the previous sibling
        var closestContent = element.closest('.bx-quote-block-right__content');
        var hasImage = closestContent.previousElementSibling.querySelector('.tns-slide-active .bx-quote-block_picture'); 
        console.log(hasImage);
        var outerBlock = closestContent.closest('.bx-quote-block__outer');
        var leftContent = closestContent.previousElementSibling;
        if(hasImage) {
            outerBlock.classList.remove(existingClass);
            outerBlock.classList.add(newClass);
            leftContent.classList.add('.bx-quote-block__leftContent_hide');}
        else {
            outerBlock.classList.remove(existingClass);
            outerBlock.classList.add(newClass);
            leftContent.classList.add('.bx-quote-block__leftContent_hide');
        }

 });